Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5519069 | Contact lenses and materials and methods of making same | William J. Burke, Donald J. Ratkowski | 1996-05-21 |
| 5505884 | Contact lenses and materials and methods of making same | William J. Burke, Donald J. Ratkowski | 1996-04-09 |
| 5087392 | Method of mold contact lenses | William J. Burke, Donald J. Ratkowski | 1992-02-11 |